Paper Covered Flat Wire

Paper-wrapped winding wire is a special type of conductor widely used in electrical equipment such as power transformers and motors.

Its basic structure involves wrapping a layer or multiple layers of insulating paper around a conductive metal wire (usually copper or aluminum) to enhance the wire's electrical insulation and thermal properties.

Parameter
Factory
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Parameter

Recommended conductor sizes:

Sizes for flat conductors:

Thickness 0.80-12.00mm

Width 3.00-25.00mm

Width-thickness ratio ≤20

Sizes for round conductors:

Diameter 2.00-5.00mm

Conductor Materials:

•High-quality oxygen-free copper rods with an oxygen content of less than 20ppm. The conductivity exceeds 100% after annealing.

•High-quality aluminum electrical rods, with a conductivity exceeding 62% after annealing

Winding insulation materials:

• Power cable paper

• High elongation fiber paper

• High density insulation paper

• Aromatic polyamide paper (Nomex)

• Heat-resistant insulation paper

• PET film

Users can specify the brand, model, and specifications of insulation material

Paper Covered Round Wire Insulation Thickness

Standard Insulation

Thickness(mm)

0.3

0.45

0.80

1.20

1.80

4.25

Tolerance(mm)

±0.05

±0.10

±0.12

±0.15

±0.30

Paper Covered Flat Wire Insulation Thickness
Standard Insulation Thickness(mm)	0.45	0.60	0.95	1.35	1.60	1.95	2.45	2.95
Maximum Insulation Thickness(A-a)	0.57	0.74	1.14	1.56	1.84	2.23	2.77	3.32
Minimum Insulation Thickness(B-b)	0.40	0.53	0.85	1.20	1.45	1.80	2.30	2.75